Dimethyl Ether Production from Biomass Char and CO2-Rich Bio-Syngas

作者：Xu Yong; Yan Shi Zhi; Ye Tong Qi; Zhang Zhao; Li Quan Xin^*

来源：Acta Physico - Chimica Sinica, 2011, 27(8): 1926-1932.

• Biomass char
• Dimethyl ether
• Bio-syngas conditioning
• NiO-Al2O3 catalyst
• Cu-ZnO-Al2O3/HZSM-5 catalyst

We report on a novel approach toward dimethyl ether (DME) synthesis using crude CO2-rich bio-syngas and biomass char. The crude bio-syngas was derived from bio-oil reforming and was initially conditioned by catalytic conversion into CO-rich bio-syngas using biomass char over the Ni/Al2O3 catalyst. The molar ratio of CO2 to CO significantly decreased from 6.33 in the CO2-rich bio-syngas to 0.21 after bio-syngas conditioning at 800 degrees C. The yield of dimethyl ether from the conditioned bio-syngas was about four times higher than that from the CO2-rich bio-syngas over the Cu-ZnO-Al2O3/HZSM-5 catalyst. This work potentially provides a useful approach toward producing biofuels and chemicals from bio-syngas and a novel utilization of biomass char.

• 出版日期2011-8
• 单位中国科学技术大学